Mohan bought 37 books for Rs.729 and sold them at a profit equal to the selling price of 8 books. The selling price of 1 book is:

Rs.29 Rs.30 Rs.33 Rs.25

Rs.29

S.P. of 37 - C.P. of 37 = S.P. of 8 (profit) S.P. of 29 = C.P. of 37 C.P. of 37 = Rs. 729 (given) Therefore, S.P. of 29 = Rs. 729 S.P. of 1 = Rs.29